The NEWS was very busy at the AHR Expo in New York City, visiting as many booths as possible in search of new products. Below is a comprehensive list of all the refrigeration and ice machine products we found on the show floor.
The ‘R’ in Refrigeration Service Engineers Society (RSES) got its due at the 76th RSES Annual Conference and HVACR Technology Expo in Pittsburgh, Pa. Topics ranged from the latest trends in refrigerants to the servicing of equipment, from basic components to complex systems using such refrigerants.
Highly-efficient AK/AJ condensing units have been added to the Celseon® line of products. Each unit has an ultra-reliable, single-phase, PSC (permanent split-capacitor) motor, which does not require a starter (115V 60Hz and 208-230V 60Hz are available).
Emerson announced that it has acquired the Marine Container and Boiler business of Johnson Controls Inc., enabling Emerson Climate Technologies to expand its refrigeration technology and solutions offerings in the global transportation sector. Terms of the acquisition were not disclosed.
From a global perspective, there is a lot of interest in the wider use of R-744 (CO2), especially in supermarket refrigeration. Recently, a number of international studies and seminars have reported some of the latest developments regarding R-744.
One of the basic components selected when installing a walk-in cooler/freezer or any field-assembled refrigeration system is the metering device, typically the thermostatic expansion valve (TXV). The TXV needs to be selected to match the Btu capacity of the system’s evaporator and compressor.
The amount of condenser subcooling needed is system dependent. The more pressure drops — friction and static — associated with the lines and accessories that carry the liquid in the system, the more need there will be for liquid subcooling to prevent liquid line flash gas.